Union County, Illinois Map
Explore Union County, Illinois with this interactive street and satellite map. Browse all 7 cities and towns in Union County below.
Interactive Map of Union County, Illinois
| County | Union |
| State | Illinois (IL) |
| County Seat | Jonesboro |
| Country | United States of America |
| Latitude | 37.436915 |
| Longitude | -89.251036 |
| Cities & Towns | 7 |
| Area Codes | 224, 618, 847 |
About Union County, Illinois
Union County occupies a complex geological intersection where the flat, oceanic reach of the Midwestern till plain abruptly yields to the stubborn, unglaciated limestone bluffs of the Shawnee Hills. To the west, the Mississippi River acts as a colossal, slow-moving border, its floodplain providing a deep, alluvial foundation for the agricultural lifeblood of the region. The landscape here is defined by a verticality uncommon in the surrounding states; high, rocky ridges divide the sky into sharp, irregular segments, while the cool, damp hollows hold a lingering mist long after the morning sun has claimed the open fields. This is a terrain of dramatic contrasts, where the sediment of ancient seas has hardened into cliffs that overlook the vast, silent movement of the river below.
European settlers arrived in the early nineteenth century, drawn by the promise of timber and the fertile soil deposited by the shifting waterways. Union County was organized during a period of rapid territorial expansion, establishing a administrative center that served as the focal point for the surrounding homesteads and trading outposts. These early inhabitants navigated the dense, tangled forests and the unpredictable flood zones, carving out a existence dictated by the seasonal rise and fall of the river. The architecture of the county seat reflects a utilitarian dignity, characterized by heavy brick masonry and stone foundations that seem to have absorbed the weight of the generations who gathered there to settle disputes, conduct commerce, and mark the passage of time.
Agriculture remains the primary pulse of the region, with the horizon dominated by the seasonal cycle of crops that turn from the pale green of spring to the rusted gold of autumn. The character of the county is informed by this intimate engagement with the soil, creating a population that measures its days by the shifting light and the requirements of the harvest. Beyond the fields, the vast tracts of protected forest and rugged bluffs offer a quiet sanctuary, where the air feels heavy with the scent of damp earth and decaying leaves. Here, the rhythm of life is not defined by external haste, but by the persistent, quiet endurance of a community that has learned to thrive in the shadow of the cliffs and the constant, rhythmic churn of the great river.
Cities and Towns in Union County
About This Union County Map Page
This page provides an interactive map of Union County, Illinois alongside links to detailed street maps for 7 cities and towns. The county seat is Jonesboro. Each city and town map page includes live weather, local news and precise GPS coordinates.
The Search Maps button below the county map opens USGS topographic maps and aerial imagery as base layers, with a labelled U.S. National Grid (USNG) overlay, a distance and bearing tool, and a single-fix GPS readout giving your USNG grid reference and latitude and longitude.
Location data is sourced from the USGS GNIS database and verified by coordinates, not name matching alone.
| Page generated | September 2026 |
| Location data | USGS GNIS database; coordinates matched to 2020 US Census records |
